31.
31 is > 30.
31 is < 40.
3 + 1 = 4.
AB<span> is a straight line divided at C so that the rectangle contained by </span>AB<span>, </span>BC equals<span> the square on AC ; if AD is </span>equal<span> to </span>BC<span>, </span>
(2 x 9) + (5 x 9)
= 7 x 9
= 63
$63 is the answer.
Hope it helped! :-D
Answer:
7350
Step-by-step explanation:
I hope this helps.